Home » Public Forums » GMCnet » porous aluminum tranny pan
Re: [GMCnet] porous aluminum tranny pan [message #326125 is a reply to message #326123] |
Fri, 17 November 2017 20:26 |
Larry
Messages: 2875 Registered: January 2004 Location: Menomonie, WI
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Ken Henderson wrote on Fri, 17 November 2017 19:55Karen,
Thanks for reminding me that I haven't reported on my Ragusa pan coating
results: After 3+ weeks of using the pan I painted inside and baked, I can
report that I've lost about a pint of fluid...
It's now obvious that the porosity, if it ever had any, is cured. But,
there is leakage at the rear of the pan only, probably from the flange, but
possibly from the chain cover. Because the leaks run down the side of the
pan without leaving an easily detected trail, the drops on the flanges at
the bottom of the pan appear to be coming through the aluminum -- they're
NOT.
I'm using a nicely made Felpro composition gasket, Permatex'd to the pan
(but not the transmission). I did not paint the pan's flange, as someone
suggested too late, but that aviation Permatex should certainly prevent any
leakage there. So, I'm still keeping a drip tray under the transmission
and don't know what to try next -- unless I R&R the chain cover and reseal
it as well -- but Manny probably used Permatex on both sides of that
gasket.
Ken
Drippy
H.
Ken,
I've been chasing a leak for about a year now and finally discovered it in an odd place. If you open the hatch and look straight down at where the cooler lines go into the trans, slightly above and slightly to the left of the inner line, I could see what looks like a bolt hole with the end of a bolt slightly exposed. I have looked at two other transmissions that I have and neither has this bolt hole, only the trans in my coach. What I am seeing is the end of a bolt that can only be found by dropping the trans and taking off the chain cover, so I have no idea what is for. It was leaking just little , but enough to coat the trans pan, and everything else in the vicinity with trans fluid. Took about a pint every 500 mi, and did a nice antirust job on the underside of my coach with many drops that reached the toad.
To fix it without taking the trans down, I used a Dremel tool with a right angle adaptor and a small diamond grinder. I first sprayed it with Brake Clean, then did some roughing up of all of the surfaces in the area, along with sanding the flat surfaces around the hole. Then mixed up some JB Weld, and spread it over the hole. Got about 100 miles on it now and leak is gone. Will see if it lasts.
If I can get the pics off of my phone, I'll post them on the photo site.
JWID and HTH
Larry
78 Royale w/500 Caddy
Menomonie, WI.
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porous aluminum tranny pan
By: KB on Thu, 21 September 2017 23:02
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
By: Grrumpy on Fri, 22 September 2017 17:49
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Re: [GMCnet] porous aluminum tranny pan
By: USAussie on Fri, 22 September 2017 07:18
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Re: porous aluminum tranny pan
By: jricke on Fri, 22 September 2017 08:22
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Re: porous aluminum tranny pan
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Re: porous aluminum tranny pan
By: jhbridges on Fri, 22 September 2017 08:48
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Re: porous aluminum tranny pan
By: TR 1 on Fri, 22 September 2017 09:09
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
By: KB on Fri, 22 September 2017 11:07
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Re: [GMCnet] porous aluminum tranny pan
By: Kosier on Fri, 22 September 2017 11:57
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
By: richshoop on Sat, 23 September 2017 00:15
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
By: KB on Sun, 24 September 2017 18:08
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
By: KB on Sun, 24 September 2017 20:53
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
By: powerjon on Sun, 24 September 2017 09:10
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
By: USAussie on Sun, 24 September 2017 16:43
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Re: [GMCnet] porous aluminum tranny pan
By: Adrien G. on Sun, 24 September 2017 22:03
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Re: [GMCnet] porous aluminum tranny pan
By: USAussie on Fri, 22 September 2017 16:02
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
By: KB on Fri, 22 September 2017 17:15
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Re: [GMCnet] porous aluminum tranny pan
By: KB on Fri, 22 September 2017 17:31
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Re: [GMCnet] porous aluminum tranny pan
By: USAussie on Fri, 22 September 2017 21:00
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Re: porous aluminum tranny pan
By: KB on Fri, 22 September 2017 11:01
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Re: porous aluminum tranny pan
By: TR 1 on Fri, 22 September 2017 11:26
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Re: porous aluminum tranny pan
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Re: porous aluminum tranny pan
By: Aaron on Sun, 24 September 2017 19:30
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Re: [GMCnet] porous aluminum tranny pan
By: k2gkk on Sun, 24 September 2017 19:49
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Re: [GMCnet] porous aluminum tranny pan
By: KB on Sun, 24 September 2017 21:18
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Re: [GMCnet] porous aluminum tranny pan
By: midlf on Mon, 25 September 2017 08:55
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Re: [GMCnet] porous aluminum tranny pan
By: KB on Mon, 25 September 2017 10:13
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Re: [GMCnet] porous aluminum tranny pan
By: Dennis S on Mon, 25 September 2017 11:18
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Re: [GMCnet] porous aluminum tranny pan
By: Dennis S on Mon, 25 September 2017 11:21
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Re: [GMCnet] porous aluminum tranny pan
By: midlf on Tue, 26 September 2017 03:42
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
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Re: porous aluminum tranny pan
By: Aaron on Mon, 25 September 2017 11:04
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Re: porous aluminum tranny pan
By: dr.diesel on Mon, 25 September 2017 16:55
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Re: [GMCnet] porous aluminum tranny pan
By: USAussie on Mon, 25 September 2017 17:19
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Re: [GMCnet] porous aluminum tranny pan
By: jimk on Tue, 26 September 2017 00:44
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Re: porous aluminum tranny pan
By: KB on Fri, 17 November 2017 15:48
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
By: jimk on Fri, 17 November 2017 20:16
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Re: [GMCnet] porous aluminum tranny pan
By: Larry on Fri, 17 November 2017 20:26
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Re: [GMCnet] porous aluminum tranny pan
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Re: [GMCnet] porous aluminum tranny pan
By: KB on Sat, 18 November 2017 14:52
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Re: [GMCnet] porous aluminum tranny pan
By: tphipps on Sat, 18 November 2017 16:38
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Re: porous aluminum tranny pan
By: Larry on Fri, 17 November 2017 21:08
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Re: [GMCnet] porous aluminum tranny pan
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